在 GraphQL 中报错：Variable “$sessionId” of type “String” used in position expecting type “String!”.

由 永夜 · 2022/09/05

1、在 GraphQL 中报错：Variable “$sessionId” of type “String” used in position expecting type “String!”.。如图1

图1

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{     "errors": [         {             "message": "Variable \"$sessionId\" of type \"String\" used in position expecting type \"String!\".",             "extensions": {                 "category": "graphql"             },             "locations": [                 {                     "line": 2,                     "column": 163                 },                 {                     "line": 8,                     "column": 16                 }             ]         }     ] }

2、查看请求查询

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mutation ThemeUpdate($themeId: ID!, $settings: [ThemeSettingDataInput!], $sections: [ThemeSettingsDataSectionInput!], $appEmbeds: [ThemeSettingsDataBlockInput!], $sessionId: String) {   onlineStoreThemeSettingsDataUpdate(     themeId: $themeId     settings: $settings     sections: $sections     appEmbeds: $appEmbeds     sessionId: $sessionId   ) {     sessionId     __typename   } }

3、查看 GraphQL 文档，$sessionId: String!。缺少了 !。如图2

图2

4、在请求查询中调整后，不再报错。如图3

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mutation ThemeUpdate($themeId: ID!, $settings: [ThemeSettingDataInput!], $sections: [ThemeSettingsDataSectionInput!], $appEmbeds: [ThemeSettingsDataBlockInput!], $sessionId: String!) {   onlineStoreThemeSettingsDataUpdate(     themeId: $themeId     settings: $settings     sections: $sections     appEmbeds: $appEmbeds     sessionId: $sessionId   ) {     sessionId     __typename   } }

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